00305nam a2200121Ia 4500008004100000082001100041100001400052245003900066260003500105300001500140600001300155650001500168140224s9999    xx            000 0 und d  a311 L4  aHills, M.  aStatistics for comparitive studies  aLondonbChapman and hallc1974  aviii,194p.  aM. Hills  aStatistics